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Old 11-26-2008, 02:25 PM
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Like junior stocker, I'd be concerned about the compression height of the piston. Measure your present pistons and don't settle for a reduced c.h. If you do, you'll likely render the squish inadequate to prevent detonation on the same fuel you've been using. Also check the crown of your current pistons. If they have a nice big flat area that mates up with the underside of the head at TDC, then use only the exact same type of piston crown to replace them. Some pistons use just a thin (maybe 3/8") wide ring around the perimeter of the piston, with the center of the piston at a lower elevation. The area of this ring won't allow the same squish characteristics as a nice big flat area on the crown.
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